PET classification fiber grade polyester chips, bottle grade polyester chips, film grade polyester chips

Developed by China's Chinese Academy of Sciences, using pet polymer intercalation and intercalation technology, organic montmorillonite and pet monomers are added together into a polymerizer. npet is more barrier than ordinary pet, and beer is preserved for 4-5 months. Same as fresh beer.English abbreviation PET, scientific name: polyethylene terephthalate, polymerized from purified terephthalic acid (PTA) and ethylene glycol (EG). Polyester chips may be the raw material of polyester bottle chips, or a secondary name after different uses.

At present, polyester chips are mainly used in bottle-grade polyester (widely used in the packaging of various beverages, especially carbonated beverages), polyester film (mainly used in packaging materials, films and tapes, etc.) and polyester for chemical fibers.

Polyester chips Scientific name: polyethylene terephthalate, English abbreviation ET is made of purified terephthalic acid (PTA) and ethylene glycol (EG). Classification of polyester chips:

1. According to the composition and structure, it can be divided into: blending, copolymerization, crystallization, liquid crystal, annular polyester chips, etc.;

2. According to performance, it can be divided into: coloring, flame retardant, antistatic, moisture absorption, anti-pilling, antibacterial, whitening, low melting point, tackifying (high viscosity) polyester chips, etc.;

3. According to the use, it can be divided into: fiber-grade polyester chips, bottle-grade polyester chips, and film-grade polyester chips (mainly due to different process indicators).

Fiber-grade polyester chips can be divided into: super glossy (large glossy), glossy, semi-dimming and (full) matting polyester chips according to the content of the matting agent tio2.

There are also cationic polyester chips. At present, it is mainly used for bottle-grade polyester (widely used in the packaging of various beverages, especially carbonated beverages), polyester film

Chip spinning, bottle spinning, and melt spinning are common sayings. The majors are: film-grade polyester, bottle-grade polyester, and fiber-grade polyester—the prices of these three are from high to low. The difference is reflected in molecular weight and purity:

Fiber-grade polyester chips are used to manufacture polyester staple fibers and polyester filaments, and are the raw materials for polyester fiber enterprises to process fibers and related products.

Bottle-grade polyester chips are divided into two types: copolymerization and homopolymerization. According to different uses, they can be divided into mineral water bottles, carbonated beverage bottles, other food containers and packaging materials.

Since the advent of polyester film in the 1950s, due to its excellent mechanical properties, chemical resistance and dimensional stability, it has been rapidly developed and widely used as an electrical insulating film; with the development of the home appliance industry, thick polyester film usage has increased rapidly. In recent years, polyester film has been widely used in packaging materials, printing materials, building materials, office materials, magnetic materials and photosensitive materials and other civilian aspects as well as cutting-edge and high-tech fields.